Tractor



FIG. 1 is a front right perspective view of a tractor showing my newdesign;

FIG. 2 is a front left perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a top view thereof.

The broken line showing of portions of a tractor is included for thepurpose of illustrating environmental structure only and forms no partof the claimed design.

CLAIM I claim the ornamental design for a tractor, as shown anddescribed.